Can’t miss that one because we all rely on this IDE! You can get it from here.
New Web Development Features in Visual Studio 2008 SP1
The following is a list of new features in SP1 which relate to web development:
* Class Libraries and Web Application Projects in Express
* JScript Formatting
* More Support for External JScript Libraries
* Dynamic Data Templates
* SQL Server 2008 Support
* WCF Renaming Support
* IIS Module and Handler Templates
* Multiple Selection in Design View (new since SP1 Beta)
Visual Studio 2008 SP1 and Visual Web Developer 2008 SP1 contains several hundred bug fixes related to web development.